[MM-55726] Create batch report worker, add batch report job for exporting users to CSV (#25832)

* Split out migration logic and create generic BatchWorker

* WIP

* WIP

* POC batch reporting

* Oops

* Job hookup

* Working export to file

* PR feedback

* Merge'd

* Fix error handling

* Add API to start report, translations, couple fixes

* Add DMs to send reports to users

* Merge'd

* Update types

* A bit of cleanup

* Some fixes

* Add missing API doc

* PR feedback

* Fix generated

* Fix bug with post creation

* PR feedback

* Add some tests

* PR feedback

* Fix lint

* Some test changes

* Fix tests

* Add comment to explain why we forcibly stop

* Rework of some tests

* Batch report test

* Restrict batch exports to Pro and Enterprise licenses

* Fix erroneous comment

---------

Co-authored-by: Mattermost Build <build@mattermost.com>

webapp/platform/client/src/client4.ts

@@ -1015,6 +1015,14 @@ export default class Client4 {
         );
     }
 
+    startUsersBatchExport = (dateRange: string) => {
+        const queryString = buildQueryString({date_range: dateRange});
+        return this.doFetch<StatusOK>(
+            `${this.getReportsRoute()}/users/export${queryString}`,
+            {method: 'post'},
+        );
+    }
+
     /**
      * @deprecated
      */